hardness[ˈhɑːdnəs]NOUNhardnesses (plural noun) the quality or condition of being hard."people complained about the hardness of the chairs" · [more]New content will be added above the current area of focus upon selection"a lack of mental hardness"synonymsfirmness · solidity · stiffness · rigidity · denseness · inflexibility · inelasticity · resistance · hard-heartedness · heartlessness · cold-heartedness · lack of compassion · lack of feeling · [more]New content will be added above the current area of focus upon selectionlack of sentiment · callousness · unkindness · flintiness · steeliness · harshness · severity · strictness · sternness · toughnessantonyms:softness · compassion · kindnessTranslate hardness to Choose languageAfrikaansArabicBosnian (Latin)BulgarianCatalanChinese (Simplified)Chinese (Traditional)CzechDanishDutchEnglishEstonianFinnishFrenchGermanGreekHebrewHindiHungarianIcelandicIndonesianItalianJapaneseKiswahiliKoreanLatvianLithuanianMalay (Latin)MalteseNorwegian BokmålPersianPolishPortugueseRomanianRussianSerbian (Cyrillic)SlovakSlovenianSpanishSwedishTamilThaiTurkishUkrainianUrduVietnameseWelshNo translation found.Powered by Oxford Dictionaries · Bing TranslatorSee more translationsNew content will be added above the current area of focus upon selectionSee lessHardness - WikipediaOverviewMeasuring hardnessHardeningPhysicsHardness is a measure of the resistance to localized plastic deformation induced by either mechanical indentation or abrasion. Some materials are harder than others. Macroscopic hardness is generally characterized by strong intermolecular bonds, but the behavior of solid materials under force is complex; therefore, there are different measurements of hardness: scratch hardness, indentation hardness, and rebound hardness. Hardness is dependent on ductility, elastic stiffness, plasticity, strain,See more on enpedia · Text under CC-BY-SA licenseHardness | Definition of Hardness by Merriam-WebsterHardness definition is - the quality or state of being hard. How to use hardness in a sentence.Hard water - WikipediaOverviewSources of hardnessEffectsMeasurementRegional informationHard water is water that has high mineral content. Hard water is formed when water percolates through deposits of limestone, chalk or gypsum which are largely made up of calcium and magnesium carbonates, bicarbonates and sulfates. Hard drinking water may have moderate health benefits, but can pose critical problems in industrial settings, where water hardness is monitored to avoid costly breakdowns in boilers, cooling towers, and other equipment that handles water. In domestic settings, hSee more on enpedia · Text under CC-BY-SA licenseHardness - definition of hardness by The Free DictionaryDefine hardness. hardness synonyms, hardness pronunciation, hardness translation, English dictionary definition of hardness. n. 1. The quality or condition of being hard. 2. The relative resistance of a mineral to scratching, as measured by the Mohs scale. 3.Hardness | Definition of Hardness at DictionaryHardness definition, the state or quality of being hard: the hardness of ice. See more.What Exactly Is Hard Water? - ThoughtCoHard water is water that contains high amounts of Ca 2+ and/or Mg 2+times Mn 2+ and other multivalent cations are included in the measure of hardness. Note water may contain minerals and yet not be considered hard, by this definition.